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【单选题】
热继电器作电动机的保护时，适用于
A.
重载起动间断工作时的过载保护
B.
轻载起动连续工作时的过载保护
C.
频繁起动时的过载保护
D.
任何负载和工作制的过载保护
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【单选题】计算一个电阻阻值为1kΩ、电容容值为1uF的低通滤波器电路,其截止频率点为 Hz
A.
1000 Hz
B.
100 Hz
C.
159 Hz
D.
314 Hz
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【单选题】10阻值为1K的电阻并联,则它的等效电阻为()
A.
10K
B.
1K
C.
0.1K
D.
0.01K
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【简答题】分度值为Cu50的热电阻在零度时的电阻值为() 。
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【判断题】在化学实验过程中,为了防护眼睛,可佩戴隐形眼镜。
A.
正确
B.
错误
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【判断题】标识为272的表面贴装片式电阻，阻值为2700Ω；100NF的电容容值与0.10uf电容容值相同。（）
A.
正确
B.
错误
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【简答题】Do you know something about the holiday camps in Hong Kong? The students in Hong Kong used to take part in an English h 1 camp in their holidays. And their parents don’t go with them 2 (虽然) they are v...
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【判断题】在化学实验过程中，为了防护眼睛，可佩戴隐形眼镜。
A.
正确
B.
错误
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【单选题】What does the image the author presents to her students suggest?
A.
Women students needn’t have the concerns of her generation.
B.
Women have more barriers on their way to academic success.
C.
Women can balance a career in science and having a family.
D.
Women now have fewer problems pursuing a science career.
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【简答题】A．Give them to the second and third year students for free. B．Sell them to the second-hand bookshop. C．Advertise them in the student newspaper for sale. D．Advertise them on the university notice board...
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【单选题】_____ of the students in our class _____ money to the disabled people these days. [     ]
A.
Two third; have raised
B.
Two thirds; has raised
C.
Two three; have raised
D.
Two thirds; have raised
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相关题目：
【单选题】计算一个电阻阻值为1kΩ、电容容值为1uF的低通滤波器电路,其截止频率点为 Hz
A.
1000 Hz
B.
100 Hz
C.
159 Hz
D.
314 Hz
查看完整题目与答案
【单选题】10阻值为1K的电阻并联,则它的等效电阻为()
A.
10K
B.
1K
C.
0.1K
D.
0.01K
查看完整题目与答案
【简答题】分度值为Cu50的热电阻在零度时的电阻值为() 。
查看完整题目与答案
【判断题】在化学实验过程中,为了防护眼睛,可佩戴隐形眼镜。
A.
正确
B.
错误
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【判断题】标识为272的表面贴装片式电阻，阻值为2700Ω；100NF的电容容值与0.10uf电容容值相同。（）
A.
正确
B.
错误
查看完整题目与答案
【简答题】Do you know something about the holiday camps in Hong Kong? The students in Hong Kong used to take part in an English h 1 camp in their holidays. And their parents don’t go with them 2 (虽然) they are v...
查看完整题目与答案
【判断题】在化学实验过程中，为了防护眼睛，可佩戴隐形眼镜。
A.
正确
B.
错误
查看完整题目与答案
【单选题】What does the image the author presents to her students suggest?
A.
Women students needn’t have the concerns of her generation.
B.
Women have more barriers on their way to academic success.
C.
Women can balance a career in science and having a family.
D.
Women now have fewer problems pursuing a science career.
查看完整题目与答案
【简答题】A．Give them to the second and third year students for free. B．Sell them to the second-hand bookshop. C．Advertise them in the student newspaper for sale. D．Advertise them on the university notice board...
查看完整题目与答案
【单选题】_____ of the students in our class _____ money to the disabled people these days. [     ]
A.
Two third; have raised
B.
Two thirds; has raised
C.
Two three; have raised
D.
Two thirds; have raised
查看完整题目与答案